1) Find the local maximum and minimum values and saddle point(s)
of the function. If you have three-dimensional graphing software,
graph the function with a domain and viewpoint that reveal all the
important aspects of the function. (Enter your answers as a
comma-separated list. If an answer does not exist, enter DNE.)
f(x, y) =
7y
cos(x), 0 ≤
x ≤ 2π
local maximum value(s)
local minimum value(s)
saddle point(s)
(x, y, f)
=
2)
Find the local maximum...